Apparatus for the successive release of items of mail from a stack

US4077620A · kind A · utility

Assignee

• Licentia Patent-Verwaltungs-GmbH · DE

Inventors

• Werner Frank · Radolfzell, DE
• Henning Jeschke · Konstanz, DE
• Gisbert Burkhardt · Reichenau, DE

Key dates

• Filing date: Mar 25, 1977
• Grant date: Mar 7, 1978
• Expiry date: Mar 25, 1997

Classification

• Technology area (CPC G): Physics
• CPC primary: G07B2017/00685
• WIPO field: Control
• WIPO sector: Instruments

Abstract

In apparatus for the successive discharge and conveyance, along a conveying path, of items of mail from a stack by a continuously driven conveying device and an externally controllable removal member arranged to transport successive items from the stack to the region of action of the conveying device, the desired spacing between successive items is established by the provision of a first sensing unit disposed between the stack and the conveying device to define a first measuring path extending along the conveying path and to provide an output signal indicative of the length of the portion of the first measuring path traversed by the leading edge of an item presently being conveyed by the removal device, a second sensing unit disposed downstream of the first sensing unit, along the conveying path, to define a second measuring path offset from the first measuring path, along the conveying path, by a distance corresponding to the desired spacing between successive items, and to provide an output signal indicative of the length of the portion of the second measuring path traversed by the leading edge or trailing edge of an item being conveyed by the conveying device, and a control memb…